I have a repair I am attempting on 2 guitars. One is an Epiphone dot that has no electronics and a body crack at the upper f-hole. The crack is about 2" long and is through the wood. The other is a Strat body that has multiple cracks that are alost through the whole body. What would be the best way to repair the crack and get the best sound from them once sompleted. These are project pieces that I amp practicing on so that I have some experience when I start my guitar repair biz in the future.